<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>登录验证</title>
		<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
		
	<script>
		function checkUname(){
			username=$("#uname").val();
			//验证规则(正则表达式)
			reg = /^[a-zA-Z0-9]{3,10}$/;
			if(!reg.test(username)){
				$("#uname").css("border-color","red");
			return false;
			}else{
				$("#uname").css("border-color","");
				return true;
			}
		}
		function checkUpsw(){
			psw=$("#upsw").val();
			reg = /^[0-9]{6}$/;
			if(!reg.test(psw)){
				$("#upsw").css("border-color","red");
				return false;
			}else{
				$("#upsw").css("border-color","");
				return true;
			}
			}
			function checkAll(){
				checkUname()&&checkUpsw();
			}
		
	</script>
	</head>
	<body>
		<h3>用户名是字母数字的组合，3-10个；密码6个数字</h3>
		用户名<input onblur="checkUname()" type="text" id="uname" />
		密码<input onblur="checkUpsw()" type="password" id="upsw"/>
		<button onclick="checkAll()">登录</button>
	</body>
</html>
